public class Application{ 
 Seal Xerus_ - Release amd64 (20160420.1)]/ xenial main restricted
     public static void main(String args[]){ 
        Pillar2 pillar2; 
        Geometry bottom =null; 
        pillar2 =new Pillar2 (bottom,100); 
        System.out.println("体积"+pillar2.getVolume()); 
        bottom=new Rectangle(12,22); 
        pillar2 =new Pillar2 (bottom,58); 
        System.out.println("体积"+pillar2.getVolume()); 
        bottom=new Circle2(10); 
        pillar2 =new Pillar2 (bottom,58); 
        System.out.println("体积"+pillar2.getVolume()); 
       } 
    } 

